Prime And Composite (Page 2 of 2) in pdf

Prime And Composite Page 2

ANSWER KEY

Prime and Composite

Factors are the numbers you multiply to get another number.

2 x 3 = 6

2 and 3 are factors of 6.

1 x 6 = 6

1 and 6 are also factors of 6.

What are the factors of 6?

1, 2, 3, and 6

Prime numbers are the numbers that have only two factors.

1 x 19 = 19 1 and 19 are the only factors of 19.

Because 19 has only two factors, it is a prime number.

Composite numbers are the numbers that have more than two factors.

1 x 10 = 10 1 and 10 are factors of 10.

2 x 5 = 10

2 and 5 are also factors of 10.

What are the factors of 10?

1, 2, 5, and 10

Because 10 has more than two factors, it is a composite number.

List all of the factors for the number 4.

1, 2, and 4

Is 4 a prime or composite number?

composite

List all of the factors for the number 11.

1 and 11

Is 11 a prime or composite number?

prime

List all of the factors for the number 16.

1, 2, 4, 8, and 16

Is 16 a prime or composite number?

composite

List all of the factors for the number 23.

1 and 23

Is 23 a prime or composite number?

prime

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Prime And Composite Page 2